Networking
Estimate an upload or download from a known file size and transfer rate. Compare decimal and binary storage units without confusing megabits and megabytes.
Enter the file size and a positive transfer speed. Select units carefully: MB is bytes and Mbps is bits per second. Usable bandwidth is the share available for the transfer: 100% uses the whole rate, while 80% uses four fifths.
Enter your inputs and run the tool.
Time in seconds = file size in bits ÷ (transfer rate in bits/second × usable bandwidth ÷ 100). One byte is eight bits. Decimal kB/MB/GB use powers of 1,000; KiB/MiB/GiB use powers of 1,024.
The estimate is 640 seconds, or 10 minutes 40 seconds.
At 100% usable bandwidth the estimate is 80 seconds. At 80% it is 100 seconds. A zero-size file takes zero seconds in this model.
This tool does not measure connection speed. Latency, protocol overhead, storage speed, congestion and rate changes can increase actual time. Enter a realistic usable share; it is not an automatically measured loss rate. Numeric results are estimates, not delivery promises.
For mistakes or suggestions, contact UtilTrove. Please include a non-sensitive example.